In this series, artistic anatomist Rey Bustos brings you a fun, unique introduction to anatomy of the human body. In this fourth lesson of the series, Rey shows you anatomy of the front torso. Rey will begin by lecturing on the blackboard, breaking down each bone, muscle, and tendon of the region. Next, he will use photo references to diagram key areas of the front torso. Finally, Rey will end the lesson by doing an ecorche drawing demonstration over the photo references.